3. in our study, mild CTS referred to patients with decreased conduction velocity over the palm-wrist segment and delayed DSL, with normal median SNAP amplitude and CMAP amplitude of the APB. Moderate CTS referred to patients with abnormally delayed DML and DSL with either decreased median SNAP amplitude or decreased CMAP amplitude of the APB muscle. Thus, CTS patients with the presence of either fibrillation potentials or reinnervation on needle EMG in the APB were excluded (to ensure the inclusion of only mildly or moderately affected individuals);